Mascara brush



FIG. 1 is an enlarged view of the identified portion of the mascara brush of FIG. 4 showing our new design;

FIG. 2 is a top view of the mascara brush of FIG. 4;

FIG. 3 is a rear view of the mascara brush of FIG. 4;

FIG. 4 is a perspective view of the mascara brush showing our new design;

FIG. 5 is a lateral view (right side) of the mascara brush of FIG. 4; and,

FIG. 6 is a lateral view (left side) of the mascara brush of FIG. 4. 

The ornamental design for mascara brush, as shown and described. 